I play alot of diffrent fender jazz bass four strings, but want to give a 5 a chance. I have seen the MIA's which are passive, and the MIM's which look about the same. I haev heard that its possible to find MIM's that are just as good, so i think ill just go looking for a MIM. But, i would like to know the absolute best passive pickup to upgrade it to and be hum free. I have heard good things about the dimarzio pickups, what would you suggest?